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Finding the Fourth Proportional to 416,505.45, 574,485.17 and 255,424.67

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Solution

The fourth proportional to 416,505.45, 574,485.17 and 255,424.67 is: 352,306.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,505.45 : 574,485.17 = 255,424.67 : x
  2. Step 2: Convert to fraction form
    416,505.45/574,485.17 = 255,424.67/x
  3. Step 3: Cross multiply
    416,505.45x = 574,485.17 × 255,424.67
  4. Step 4: Simplify right side
    416,505.45x = 146,737,680,817.60
  5. Step 5: Solve for x
    x = 146,737,680,817.60/416,505.45
  6. Step 6: Final answer
    x = 352,306.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.